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Zenith Manuals
Laptop
ZWL-200-2/4
Service manual
Zenith ZWL-200-2/4 Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Chapter 1 --Introduction
Optional Equipment
Related Publications
Specifications . 0
Chapter 2-- Setup
Preparation
Power Connections
Operation
Test Bench Power-Up
80287 Coprocessor Installation
Chapter 3-- Disassembly
Removing the Battery Pack
Removing the Battery
Separating the Display from the Base Unit
Removing the Keyboard
Removing Hard Drive B
Removing the Power Supply
Removing the Main Board
Opening the Display
Removing the Control Assembly
Removing the LCD Assembly
Removing the LED Assembly
Removing the Pivot Assemblies
Chapter 4 -Configuration
Setup/Configuration Menu
Hard Disk Drive
Expansion RAM
Wini Powerdown
Chapter 5 -- Circuit Descriptions
Major Integrated Circuits
80C286 Cpu
Optional 80287 Numeric Processor Extension
82C215 Address/Data Buffer
82C206 Integrated Peripherals Controller
Control Section
Major Integrated Circuits
820211 Bus Controller
System Control Processor
Memory Section
The 82C212 Memory Controller
The Monitor ROM
User Memory
Video Section
V6366 Video Controller
RGB Output Circuits
LCD Output Circuits
Parallel and Serial Communications Section
The 82C605 Multifunction Controller
Mass Storage Section
37C65 Floppy Disk Controller
Power Supply
Chapter 6 - Troubleshooting
Troubleshooting Procedure
Initial Checks
ROM-Based Disk Read Test
Comprehensive ROM-Based Tests
Comprehensive Disk-Based Diagnostics
Power Supply
Main Board
Liquid Crystal Display
Parts Lists
How to Use this Addendum
Battery Operation
Installation
Battery Care
Audible Alarm
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SERVICE MANUAL
Portable Computer
ZWL-200-2/4
ETA.
data
Systems
585.295
860-197
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